How to set an ohmmeter to read ohms?

It depends on the model and style of ohmmeter. Insert test lead connectors into the ground socket and the socket marked for ohms (it may also be marked for other things). There should be a dial to rotate to an ohms setting. Connect the other ends of the leads to the device for which resistance is being measured and read the meter. WARNING: be sure the component being tested is not connected to any power source or you risk burning out the unit.